Pipe-cutting machine.



A. F. BACON.

PiPE CUTTING MACHINE. APPLDCATION FILED JAN. 30. 1911..

1,279,965. v Patented Sept. 24, 1918.

2 SHEETS-SHEET A. F. BACON. PIPE CUTTING MACHINEL APPLICATION FILED JAN. 30.1917- Patented Sept. 24, 1918.

2 SHEETSSHEET 2.

rare as ent ies.

AMOS F. BACON, 0F FREMONT, MECHIGAN, ASSIGNOR TO THE FREMONT MANUFAC- TUBING- COMPANY, OF FREMONT, MICHIGAN, A CORPORATION OF MICHIGAN.

PIPE-CUTTING MACHINE.

Application filed January 30, 1917.

To all whom it may concern:

Be it ,known that I, AMos F. BACON, a citizen of the United States of America, residing at Fremont, in the county of Newaygo and State of Michigan, have invented certain new and useful Improvements in Pipe-Cutting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

This invention relates to a pipe cutting machine and has especial reference to a ma chine by Which metal pipes may be rapidly cut, the cutting mechanism being driven from any suitable source of power. It is the object and purpose of my invention to provide a very simple and effective machine of this character containing few parts whereby it may be economically produced and one which is very eflicient for the purposes it is designed to effect.

For an understanding of the construction.

and use of the machine reference may be had to the accompanying drawings, in which:

Figure 1 is a perspective view showing my invention in use.

Fig. 2 is a side elevation of the mechanism shown in Fig. 1, the pipe-cutting mechanism being shown in longitudinal section.

Fig. 3 is a perspective view of a bushing which may be used for smaller sizes of pipes.

Fig. 4 is a plan view illustrating the pipe cutting machine and the manner of mounting the same upon a portable frame.

Fig. 5 is a side elevation of the construction in Fig. 4.

Fig. 6 is an end elevation thereof, and

Fig. 7 is a fragmentary side elevation of the cutting mechanism.

Like reference characters refer to like parts throughout the several views of the drawings.

The pipe to be cut is held rigidly against movement and is carried on supporting bases 1 which in turn are attached to and supported a distance above the ground or floor on a suitable platform 2 which forms one element of a supporting bracket hereafter described. An under clamp or vise member 3 is located upon each base 1 and on said clamp members pipe 4 is laid. Yokes 5 are connected to the bases 1 and between the vertical parallel sides thereof an upper clamp or vise member 6 is slidably mounted Specification of Letters Patent.

Patented Sept. 24, 1918.

Serial No. 145,423.

- an inner sleeve 9 which is adapted to be passed over the end of the pipe and secured by set screws 10 which bear against the pipe or a bushing 11 located on the pipe. This bushing has a plurality of longitudinal slits 12 extending from each end alternately to a point adjacent the opposite end. The sleeve 9 receives the largest sizes of pipe that the machine is capable of handling and for smaller sizes of pipe bushings of varying thickness are used. A short distance from its inner end sleeve 9 has a ring 13 secured thereto by means of set screws and an outer sleeve 14 is passed over the inner sleeve and loosely mounted thereon being secured in place by a collar 14 which is interposed between the ring'13 and the end of the outer sleeve. A sprocket wheel 15 is attached permanently in any suitable manner to the outer sleeve whereby it may be rotated through a sprocket chain 16 leading to any suitable source of power such as engine, motor, or the like. In addition to the set screws 10, the inner sleeve 19 is secured in place on the pipe or bushing by screws 17 which are threaded through the inner sleeve against the bushing, a plurality of openings 19 being formed in the outer sleeve for the passage of the screws. At its end sleeve 14 is formed with an inturned lip 18 which bears against the outer edge of the sleeve 9. By this construction the sleeve 14 is rotatably mounted upon sleeve 9 and held firmly against endwise movement.

On the outer end of sleeve 14 a bracket 20 projects radially and may have a collar 21 secured at its end through which a shaft 22 passes and'in which it is rotatably mounted. The shaft is screw-threaded and inserted into a sleeve 24 formed on the rear side of a guide 25 slidably mounted on the bracket 20 between guides 26. Clamping bars 27 are used to hold a cutting tool 28 rigidly in position with respect to the slide. A star wheel 29 is f xed at the outer end of the shaft 22, this wheel on each revolution of the sleeve 1-1:, engaging a pin 30 which is pivotally mounted at the end of an arm 31 secured to or formed integral with the ring 13.

In operation the rotation of sleeve 14 carries the cutting tool around the pipe. At the beginning of the operation the star wheel may be rotated by hand to bring the cutting end of the tool against the outer surface of the pipe. WVith each revolution of sleeve 14 star wheel :29 being engaged by the pin 30 momentarily causes a partial revolution of the star Wheel and attached shaft whereby forcing the cutting tool inwardly and this operation continues until the pipe is cut olf, whereupon by loosening screws 10 and 17 the cutting mechanism may be either removed or located at a different position for another out.

In practice the complete cutting outfit will be mounted upon a frame having parallel sides 32 and 33 connected at one end by cross bar 34 and at its opposite end by a pair of cross bars 35 the ends of sides 32 and 33 being formed suitably for grasping by the hand. The motor, engine or the like inclicated partially at 36, preferably, will be mounted on the bars 35. The pipe supporting portion of the device is comprised of a bracket 37 of channel iron, preferably, to which one end of the platform 2 is secured, a brace 38 being attached at the opposite end and extended diagonally to the side bar 33. In addition a rod 39 and sleeve and rod 4L0 are used to further reinforce and brace the pipe-holding member which is shown as at tached to the bar 33 of the frame and proj ecting laterally from the frame. This construction permits the ready portability of the entire device.

The cutting machine described works very rapidly and by its use metal pipes may be very easily cut to desired lengths. The cutting tool makes a clean cut and after a section has been cut from the pipe no bur is left to be removed by filing as is 110W almost universally necessary. The operation of the mechanism after once started is continuous and the feeding of the cutting tool is automatic and positive requiring no attention from the operator. The mechanism is of simple construction and as proven by actual practice very efficient for the purpose stated.

I claim 1. A pipe cutting mechanism comprising an inner sleeve having two sections of clifferent diameters, an outer sleeve located over the section of larger diameter and provided with an annular inwardly extending lip bearing against the end of the sleeve, a collar connected to the opposite end of the outer sleeve and located around the section of smaller diameter on the inner sleeve, said collar bearing against the shoulder between the two sections of the inner sleeve, means for driving the outer sleeve and rotating it around the inner sleeve, a cutting tool mounted on the outer sleeve, and. means for moving the tool toward or away from the longitudinal axis of said sleeve, substantially as described.

2. A pipe cutting mechanism comprising an inner sleeve having two sections of different outer diameters, the inner diameter of the sleeve being the same throughout its length, an outer sleeve located over the section of larger diameter and provided with an annular inwardly extending lip bearing against the end of the sleeve, a collar detachably connected to the opposite end of the outer sleeve and located around the section of smaller diameter on the inner sleeve, said collar bearing against the shoulder formed at the junction of the two sections of the inner sleeve, means to drive the outer sleeve rotatably about the inner sleeve, a bracket extending radially from the end of the outer sleeve, a cutting tool slidably mounted on the bracket, means for adjusting the cutting tool to difierent positions, a ring fixed to the inner sleeve and lying alongside of the collar, an arm projecting from the ring, said arm overhanging the outer sleeve, and means at the end of the arm adapted to be interposed in the path of movement of the tool adjusting means to actuate the same as the outer sleeve is rotated about the inner sleeve, substantially as described.

In testimony whereof I aflix my signature.

AMOS F. BACON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G." V 

